Losing my car insurance due to at risk driving

Due to my latest accident I will no longer be able to renew my full coverage car insurance policy with USAA. Non-renewal. Their next option is to go through Progressive insurance- costing me an average of $600 per month…obviously that isn’t going to work. Where do I go from here? I drive for a living (I’m a school photographer and drive all over the state of Illinois for work), and I need full coverage. What can I do so I’m not paying an arm and a leg? I truly can’t afford more that $150 per month on this. Thanks.